Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
  • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
  • B44C1/04—Producing precipitations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44F—SPECIAL DESIGNS OR PICTURES
  • B44F1/00—Designs or pictures characterised by special or unusual light effects
  • B44F1/06—Designs or pictures characterised by special or unusual light effects produced by transmitted light, e.g. transparencies, imitations of glass paintings
  • B44F1/063—Imitation of leaded light
• • C—CHEMISTRY; METALLURGY
  • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
  • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
  • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
  • C25D5/54—Electroplating of non-metallic surfaces
  • C25D5/56—Electroplating of non-metallic surfaces of plastics

Definitions

• the present invention relates to an improvement to the preparation process described in patent FR 2,658,756 so as to allow the popularization of an artisanal manufacturing process and its application to the mass production of supports having a flat surface or not but preferably in the form sheets or plates that the consumer can format or have formatted at his request and according to his tastes and needs to the dimensions he wishes.
• patent Fr 2,658756 which constitutes the closest prior art is characterized by the preparation of a decorative article obtained from a support made of metal, ceramic or plastic on which is applied according to contours and / or determined surfaces a partitioning projecting from the support, then in the meshes thereof, colors offering good adhesion to said surface and poor adhesion to the partitioning material.
• the technique presently described just as well allows the mass production and surface treatment of translucent, transparent or opaque supports, of thermoplastics, plastics, polymers, glasses, etc., as the mass production of stained glass .
• the invention reproduces on a support, with a flat surface or not, a graphic document the printing of which is done by the serigraphic route.
• the preparation of the supports requires several successive operations.
• the first of the joint operations consists in the preparation of colored inks and conductive ink.
• colored inks whose constituent base is compatible or of the same chemical nature as the material of the support to be printed, a necessary and sufficient condition to offer a very high resistance and resistance over time illustrated by the presence of two asterisks in Table A.
• the conductive ink must have the double property of soldering perfectly to the colored support or not and of hanging the copper during the electroplating or chemical metallization phase.
• This ink contains from 50 to 80% of silver or any other metal with high conductivity and for the rest a compatible binder or of the same chemical nature as the support material and the constituent base of the colored inks.
• Table B indicates the nature of the binder according to the various possible supports.
• Colored inks can be acrylic. They are applied according to the screen printing principle and having taken care to leave free spaces between each colored area C1 and C2
• the printing of the mesh is carried out on the front of the sheet according to the screen printing principle described in phase 1 and in reference to the other colors ( Figure 3). But in this phase, the printing is done using a conductive ink composed of 50 to 80% silver or any other metal with high conductivity and for the rest of an acrylic binder or a solvent acrylic and polyacrylic resins such as, for example, carbitol acetate.
• the printing of the conductive ink can be done according to any scheme and without using nurses or any preparation.
• An alternative solution to printing nurse trays envisaged in the case of electroplating, consists of the use of electrodes (1) preferably made of stainless steel called contact nuts as described in FIG. 4 and fixed to the cathode. by screws made of insulating material (2).
• electrodes (1) preferably made of stainless steel called contact nuts as described in FIG. 4 and fixed to the cathode. by screws made of insulating material (2).
• these electrodes are only necessary and usable during the phases of metallization by electroplating, chemical metallization making no use of them.
• Each method of metallization envisaged by electroplating or by chemical metallization corresponds to a specific preparation of the support printed with conductive ink.
• the prepared support is placed to undergo electroplating treatment in a first copper electrolytic bath. After the conductive ink has risen in copper, it can be rinsed with water and then, depending on the type of electrolytic bath that has been used, acid or alkaline, and the type of copper used at the anode, it can be rinsed in a second bath. containing, for example, either from 5 to 10% of So 4 H 2 , or 10% of HCl, or from 10 to 20% of sodium persulfate or ammonium persulfate or any other product used by man of art.
• the support reassembled in copper can be placed by electroplating or by chemical metallization in a second electrolytic bath of nickel or any other metal suitable for electrolytic deposits and resistant to corrosion.
• the nurses can be eliminated either by cutting the plate with when printing is done, either by removing only the nurses ( Figure 6), or even if contact nuts have been used, we will unscrew them.
• the metallization phase is carried out with nickel, whatever the type of metallization envisaged, galvanoplastic or chemical, it is possible to apply at the end of one or the other nickel-plating operation a cover of chemical gold .
• the conductive ink described in phase 2 of Example 1 is printed on a translucent, transparent or opaque support in acrylic or polyacrylic resin from a screen printing screen silhouetting the chosen pattern. If one considers the successive phase of metallization of the conductive mesh by electroplating, the printing will be done according to a diagram allowing the continuity of the electrical conduction. Feeders are printed simultaneously, generally four in number ( Figure 5) and the procedure is as claimed in claim 4 of patent FR 2,658,756. Alternatively, the contact nut technique can be used. If we consider the successive phase of metallization of the conductive mesh by chemical means, the printing will be done according to any scheme and without using nurses or any preparation. After printing, the steaming and cleaning processes of phase 2 of Example 1 will be repeated.
• the support is first placed in an electrolytic or chemical copper bath as described in Example 1, phase 3, then in a second step, in an electrolytic or chemical bath of nickel or any other metal suitable for these modes. metallization and resistant to corrosion as described in example 1, phase 4.
• a translucent or opaque support is thus obtained fitted with a nickel partition ⁇ or>
• the printing of the mesh is carried out on the front of the support according to the screen printing principle described in phase 1 and in reference to the other colors ( Figure 3). But in this phase, printing is done using a conductive ink composed of 50 to 80% silver or any other metal with high conductivity and for the rest of a vinyl binder or solvent for polycarbonates such for example ethylene chloride.
• the printing is done according to a diagram allowing or not the continuity of the electrical conduction according to the metallization mode envisaged in the successive phase by proceeding as in phase 2 of Example 1.
• Example 5 They are identical to those followed in Example 1.
• Example 5 They are identical to those followed in Example 1.
• Example 2 The procedure is as in Example 2, starting from a translucent, transparent or opaque polycarbonate support, printed with conductive ink described in phase 2 of Example 4. After printing, the steaming processes are repeated and cleaning described in phase 2 of example 1. The metallization operations described in example 2 are then carried out.
• Example 3 The procedure is as in Example 3, the supports being made of transparent or translucent polycarbonate, their front having been treated according to Example 4 or 5.
• the colors in this case being vinyl inks.
• the printing of the mesh on the back can be carried out using a vinyl white mixed with black and then dried as in phase 1 of example 4, or carried out by proceeding as in example 4 phases 2-3 -4 by inverting the films.
• glass supports for canopies composite glasses or intended to be inserted in door or window frames or other applications such as furniture, floors, walls, ceilings, bottles, flasks, containers
• Transparent or opaque color inks can be glass enamels. Glass enamels are mixtures of various fluxes such as glass powders and mineral dyes.
• the glass enamels are applied according to the screen printing principle and having taken care to leave between each colored area free spaces (Figure 1) just less than the width of the component line the mesh ( Figure 2) which will then be printed on the conductive enamel as a reference on the colors; this making it possible to obtain, with transparent or translucent glasses, a stained glass product with a single printed face whose conductive enamel can be used for. weft back delimiting the colors.
• Two types of screen printing can be used: cold screen printing and hot screen printing.
• Hot-melt enamels are then used in the form of thermoplastic pastes, the use of which requires a metal screen heated by Joule effect or by infrared lamps.
• the enamel layer immediately solidifies on the cold glass to be printed.
• the advantage of these hot-melt enamels is that they can be used to overlay or juxtapose enamels without intermediate drying between each pass.
• the final enamel will be fired at a temperature suitable for the types of enamel and glass used.
• the organic constituents of the medium are burnt and the enamel melts on the surface of the glass to form the vitrified coating.
• the printing of the mesh is carried out on the front of the support according to the screen printing principle described in the first phase and in reference to the other colors.
• a conductive ink which is here a conductive metallic enamel which can be a mixture composed of 50 to 80% of silver or any other metal with high conductivity and a transparent enamel for glass.
• this glass enamel will be an oily paste or a hot-melt enamel that will be mixed hot with silver or any other high conductivity metal suitable for temperature conditions of cooking this enamel.
• the printing of the conductive enamel is done according to a scheme whether or not allowing continuity of electrical conduction according to the metallization mode envisaged by proceeding as in phase 2 of Example 1.
• Example 1 phase 2 After printing, and depending on the type of screen printing used, it is dried and cooked as in phase 1. After cooling, the conductive mesh is cleaned with an acid solution of SO4H2 diluted to 5-10% or any other product used by those skilled in the art. In this phase we can also follow the alternative solution of Example 1 phase 2 if we consider electroplating as a metallization mode.
• Example 7 For the preparation of glass support, a variant of the screen printing technique used in Example 7 makes it possible, by the use of transfer decal paper as a manufacturing intermediary, to significantly reduce the cost price of the product by lowering the storage costs, speed and flexibility of the process and a single cooking.
• Example 7 phase 2 After cooling, the conductive mesh is cleaned as in Example 7 phase 2 and the metallization operations described in phases 3 and 4 of Example 1 are carried out.
• Example 2 The procedure is as in Example 2, starting from a support in translucent, transparent or opaque glass.
• the printing of the conductive enamel is done according to phase 2 of Example 7 and / or according to the method described in Example 8. After printing, the processes are repeated. cooking and cleaning described in phase 2 of the example
• Example 3 The procedure is as in Example 3.
• the supports being transparent or translucent glasses, their front side is treated according to Examples 7, 8 or 9, the colors are glass enamels, the printing of the mesh is carried out by '' using a white enamel for glass mixed with a black enamel then undergoes firing as described in phase 1 of example 7 or carried out by proceeding as in example 7 phases 2, 3, 4 by inverting the films or again carried out by the method of Example 8.
• Colored, transparent or opaque inks can be ceramic enamels. Ceramic enamels are mixtures of various fluxes, transparent or covered colorless enamels, and metal oxides.
• the ceramic enamels are applied according to the screen printing principle and having taken care to leave between each colored area free spaces (Figure 1) just less than the width of the line composing the mesh ( Figure 2) which will then be printed on the conductive enamel in reference on the other colors. Once these colors have been printed in ceramic enamel, we will dry them and then proceed to firing the enamel.
• the printing of the mesh is carried out on the front of the plate according to the serigraphic principle described in the first phase and in reference to the other colors.
• the printing is done using a conductive ink which is here a conductive metallic enamel which can be composed of 50 to 80% silver or any other high metal. conductivity.
• the printing of the conductive enamel is done according to a diagram allowing or not the continuity of the electric conduction according to the metallization mode envisaged in the successive phase by proceeding as in phase 2 of Example 1.
• Example 1 phase 2 After printing the conductive enamel, dry and bake as for example in phase 1. After cooling, clean the conductive mesh with an acid solution of SO4H2 diluted to 5-10% or any other product used by l man of Art. In this phase we can also follow the alternative solution of Example 1 phase 2 if we consider electroplating as a method of metallization.
• Example 8 For the preparation of ceramic plates, the same method can also be used as that described in Example 8 for glass supports, that is to say the use of transfer transfer papers, but using enamels. ceramics. The procedure is then as in Example 8 and the operations are terminated by a single firing of the colored enamels for ceramic and of the conductive mesh.
• the conductive mesh is cleaned as in example 11 phase 2 and then the metallization operations described in phases 3 and 4 of example 1 are carried out.
• Example 2 The procedure is as in Example 2, starting from a ceramic plate.
• the printing of the conductive enamel is done according to phase 2 of example 11 and / or according to the method described in example 12.
• Example 11 After printing, the cooking and cleaning processes described in phase 2 of Example 11 are repeated. then proceeds to the metallization operations described in Example 2.
• Example 1 For the preparation of glass or ceramic supports, the procedure is as in Example 1, phase 1, but the colored inks, transparent or opaque, are epoxy.
• Example 2 The procedure is as in Example 1, but the printing is done using a conductive ink composed of 50 to 80% silver or any other metal with high conductivity and for the rest, an epoxy binder.
• Example 14 The procedure is as in Example 14, starting from a translucent, transparent or opaque glass support or from a ceramic support, but only phases 2, 3 and 4 are carried out.
• Example 1 For the preparation of translucent, transparent or opaque polyethylene supports, the procedure is as in Example 1 but the color inks, transparent or opaque, are preferably epoxy.
• Phases 1 and 2 take place as in Example 14, Phases 3 and 4 take place according to Example 1.
• Example 16 The procedure is as in Example 16, starting from a translucent, transparent or opaque polyethylene support; only phases 2 of Example 14 and 3 and 4 of Example 1 are carried out.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Printing Methods (AREA)
• Inks, Pencil-Leads, Or Crayons (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Surface Treatment Of Glass (AREA)
• Finishing Walls (AREA)

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Cited By (2)

Citations (5)

• 1993
  • 1993-05-10 FR FR9305559A patent/FR2705063B1/fr not_active Expired - Fee Related
• 1994
  • 1994-05-09 CA CA002162584A patent/CA2162584A1/fr not_active Abandoned
  • 1994-05-09 EP EP94915599A patent/EP0699138B1/de not_active Expired - Lifetime
  • 1994-05-09 AT AT94915599T patent/ATE168076T1/de active
  • 1994-05-09 WO PCT/FR1994/000543 patent/WO1994026538A1/fr active IP Right Grant
  • 1994-05-09 DE DE69411561T patent/DE69411561D1/de not_active Expired - Lifetime

Patent Citations (5)

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